/Engine/Plugins/Runtime/GameplayAbilities/Source/GameplayAbilities/Public/GameplayModMagnitudeCalculation.h
Convenience method to get attribute magnitude during a CalculateMagnitude call
bool GetCapturedAttributeMagnitude ( const [FGameplayEffectAttributeCaptureDefinition](API\Plugins\GameplayAbilities\FGameplayEffectAttributeCaptureD-) & Def, const [FGameplayEffectSpec](API\Plugins\GameplayAbilities\FGameplayEffectSpec) & Spec, const [FAggregatorEvaluateParameters](API\Plugins\GameplayAbilities\FAggregatorEvaluateParameters) & EvaluationParameters, float & Magnitude ) const